Power-transmission mechanism.



.J. H. HOLLEN.

POWER TRANSMISSION MECHANISM-.- APPLICATION FILED FEB. 2a, 1913.

1,083,402, Patented Jan.6,191

COLUMBIA PLANouRAPl-l c0.,WAsHlNuTON, n. c.

E STS POWER-TRANSMISSION MECHANISM To all whom if may concern:

Be it known that I, JAMES H. HoLLEN, a citizen of the United States, andresident of the city of Providence, in the county of Providence andState of Rhode Island, have invented certain new and useful Improvementsin Power-Transmission Mechanism, of which the following is aspecification.

This invention relates to power transmission mechanism, and has for itsobject to provide such mechanism operated by a reciprocating engine, orother unit of power, for converting a reciprocating movement into arotary motion, the same comprising a pair of oppositely rotatable drumsaround each of which is wound a driving cord or band with their oppositeends attached to a reciprocating member operated by the engine, saiddrums being alternately attached to a power transmitting rotatable shaftby a set of ratchets whereby the reciprocating motion of said membercauses said shaft to rotate continuously.

A further object of said invention is to provide two sets of oppositelyacting ratchets in each drum and longitudinally shiftable clutchesadapted to be connected to either set of ratchets whereby the directionof rotation of said shaft may be reversed.

A further object of the invention is to provide a crank on the mainshaft having connecting rods between it and the reciprocating framewhereby said frame is required to take its full predetermined strokebefore a reverse action is permitted.

With these and other objects in view, the invention consists of certainnovel features of construction, as will be more fully described andparticularly pointed out in the ap ended claims.

f the accompanying drawings: Figure 1 is a plan view, partly in section,illustrating the reciprocating member as connected through cords orbands to drums mounted on the shaft for rotating said shaft, alsoshowing a crank on the shaft having a connecting rod from the crank tothe reciprocating member. Fig. 2- is a side elevation partly in section,illustrating the connection from the crank to the reciprocating member.Fig. 3 is an enlarged longitudinal sectional elevation showing the drumsand the ratchet connection to the shaft. Fig. 4: is a side elevationpartly in Specification of Letters Patent.

Application filed February 28, 1913.

Patented Jan. 6,1914. Serial No. 751,217.

section of the drums with their ratchet mechanism connected to theshaft.

Referring to th drawings, 10' designates the base on one end of which ismounted a cylinder 11 in which a reciprocatory piston 12 is mounted, thepiston is connected by means of a piston rod 13 to a longitudinallyslidable frame 14 mounted in ways or guides 15. Passing transverselythrough this frame is the main shaft 16 on which is mounted a pair ofdrums l7 and 18, which drums are connected alternately to the shaft torotate the same through sets of ratchet mechanism presently described.In Fig. 3, 16 designates the shaft on which a clutch sleeve 19 ismounted to slide longitudinally on the feather key 24 through themovement of the actuating lever 20 pivoted at 21 with pins 22 in itsfork and the same engaging the groove 23 in said sleeve. 25 and 26designate right and left hand toothed ratchet wheels respectively andwhich are engaged by pawls 27 and 28, re spectively, and the drum 17 isprovided with a central web 29 which receives its bearing on the body ofthe ratchet wheels. Drum 18 is a duplicate of drum 17, 30 and 31designating the right and left hand ratchet wheels respectively. Theclutch sleeve 19 is provided with beveled faces 32, 33 and 34, wherebywhen it is moved to its outward position the face 34 engages the rightand left hand toothed ratchet wheel 26 and 30 (which in thisconstruction are shown in one block), of both drums 17 and 18 and whenpressed inward the faces 32 and 33 engage the opposite right and lefthand ratchet wheels, whereby the reciproeating action of the frame willrotate the shaft in the opposite direction. Bearings 3 1 and 35 arearranged on opposite sides of the ratchet members to preventlongitudinal movement of the same when the clutches are forced intoengagement therewith. In order to operatively connect the reciprocatingframe let to these drumsa' cord, or, band of any suitable material, iswound around each drum in opposite direc tions with its opposite endsconnected to opposite ends of the frame 1i whereby a reciprocatingaction of said frame rotates each drum in opposite directions, to actalternately through their respective ratchet mechanism to rotate theshaft continuously in the same direction. When it is desired to reversethe direction of rotation of theshaft the clutches are moved out ofengagement with one set and into engagement with the opposite set ofratchet mechanism. In order to control the reciprocating movement of theframe so as to compel the same to move;

the full extent of a predetermined stroke before the direction can "bereversed I have provided an offset or crank portion 36 in the main shaftl6antl=have-connected this crank through connecting rods 37'38 toopposite ends :of the frame 14., said connecting rods each having apivoted link 39-and 4:0 interposed between its end and said frame tocompensate for the longitudinal travel of drum through which theyareconnected to said shaft, a reciprocating member and a band around eachdrum and attached to said member whereby a movement of said memberineither direction causes said shaft to rotate in thesame direction, acrank on said shaft and oneor more members con necting said crank tosaid reciprocating member whereby a stroke in one direction must becompleted before it can bereversed.

2. A power transmission mechanism comprising a shaft, a pair ofintermittently oppositely rotatable drums voperatively mounted on saidshaft, ratchet mechanism'in each drum adapted to connect them tosaidshaft, a reciprocating member, aban'd around each drum and attached tosaid member wherebya movement of the latter in either direction causessaid'shaft to rotate in the-same-direction, a crankzon said shaft'andmeans connecting said crank to said member whereby a stroke in onedirection must be completed before it can be reversed, and the velocityof movement is permitted to be uniform throughout the stroke, saidconnecting means including a pivoted auxiliary link whereby a freemovement of said member eating member, a band around each drum andattached 'to said member whereby a imovenient of the latter in eitherdirectioncauses said shaft to rotate in the same -direction, a crank onsaid shaft and means connecting said cran-kto saidmember whereby astroke in one direction must be completed before it can be reversed, andlongitudinally shiftable clutches adapted to engage either one of saidopposite sets of ratchet mechanisms in said drums whereby the directionof rotation of said shaft may be reversed.

4. Apower transmission mechanism comprising a shaft, a pair ofintermittentlyoppositely rotatable drums operatively mounted'on saidshaft, ratchetvmechanism in each drum adapted to connectthem to saidshaft, a reciprocatingmember, aband around each drum and attached tosaid member whereby a movement of-said member in either direction causessaid shaft to rotate in the same direction, a crank on saidshaft andmeans connecting said crank to SilldlllGIIlbQI where by a stroke in onedirection must be completed before it can be reversed,-saidconnecting-means including a pivoted auxiliary link whereby a freemovement of-said member-due to drum drive is permitted irrespective ofthe harmonic motion of said crank due to the angular positions of thelatter, and longitudinally shiftable clutches adapted to engage eitheroneof said opposite sets of ratchets in said drums whereby the directionof rotation of said shaft may be reversed.

In testimony whereof I afiix my signature in presence oftwo witnesses.

JAMES H. HOLLEN.

Witnesses HOWARD E. BAnnow, E. I. OGDEN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

